<?php

class global_vars {

    private static $_vars = array();
    private static $_instance = null;

    public function __construct() {
        
    }

    public static function instance() {
        if (self::$_instance === null) {
            self::$_instance = new global_vars();
        }
        return self::$_instance;
    }

    public function set($name, $value) {
        self::$_vars["$name"] = $value;        
    }

    public function get($name) {
        if(isset(self::$_vars["$name"]))
            return self::$_vars["$name"];
    }

}
?>
